Crime scene investigation(CSI)image is key evidence carrier during criminal investiga-tion,in which CSI image retrieval can assist the public police to obtain criminal clues.Moreover,with the rapid development of deep...Crime scene investigation(CSI)image is key evidence carrier during criminal investiga-tion,in which CSI image retrieval can assist the public police to obtain criminal clues.Moreover,with the rapid development of deep learning,data-driven paradigm has become the mainstreammethod of CSI image feature extraction and representation,and in this process,datasets provideeffective support for CSI retrieval performance.However,there is a lack of systematic research onCSI image retrieval methods and datasets.Therefore,we present an overview of the existing worksabout one-class and multi-class CSI image retrieval based on deep learning.According to theresearch,based on their technical functionalities and implementation methods,CSI image retrievalis roughly classified into five categories:feature representation,metric learning,generative adversar-ial networks,autoencoder networks and attention networks.Furthermore,We analyzed the remain-ing challenges and discussed future work directions in this field.展开更多
为了改善低层特征对图像内容描述不够精确而导致现勘图像分类准确率低的问题,提出一种利用深度学习特征的改进局部约束线性编码(local-constrained linear coding,LLC)算法。采用滑动窗口法提取图像密集卷积神经网络(convolutional neur...为了改善低层特征对图像内容描述不够精确而导致现勘图像分类准确率低的问题,提出一种利用深度学习特征的改进局部约束线性编码(local-constrained linear coding,LLC)算法。采用滑动窗口法提取图像密集卷积神经网络(convolutional neural networks,CNN)特征;利用近似LLC算法对提取的密集CNN特征进行快速编码和最大池化,并采用多尺度空间金字塔匹配产生包含空间位置信息的稀疏编码特征。最后,利用支持向量机对现勘图像进行分类从而得到高效的图像特征。对比实验结果表明,该算法的分类准确率较高。展开更多
文摘Crime scene investigation(CSI)image is key evidence carrier during criminal investiga-tion,in which CSI image retrieval can assist the public police to obtain criminal clues.Moreover,with the rapid development of deep learning,data-driven paradigm has become the mainstreammethod of CSI image feature extraction and representation,and in this process,datasets provideeffective support for CSI retrieval performance.However,there is a lack of systematic research onCSI image retrieval methods and datasets.Therefore,we present an overview of the existing worksabout one-class and multi-class CSI image retrieval based on deep learning.According to theresearch,based on their technical functionalities and implementation methods,CSI image retrievalis roughly classified into five categories:feature representation,metric learning,generative adversar-ial networks,autoencoder networks and attention networks.Furthermore,We analyzed the remain-ing challenges and discussed future work directions in this field.
文摘为了改善低层特征对图像内容描述不够精确而导致现勘图像分类准确率低的问题,提出一种利用深度学习特征的改进局部约束线性编码(local-constrained linear coding,LLC)算法。采用滑动窗口法提取图像密集卷积神经网络(convolutional neural networks,CNN)特征;利用近似LLC算法对提取的密集CNN特征进行快速编码和最大池化,并采用多尺度空间金字塔匹配产生包含空间位置信息的稀疏编码特征。最后,利用支持向量机对现勘图像进行分类从而得到高效的图像特征。对比实验结果表明,该算法的分类准确率较高。
